Late, sad news has emerged after the weekend’s GRAND-AM events at Kansas Speedway. Roger Miller, a competitor in the GRAND-AM Continental Tire Sports Car Challenge and son of former Utah Jazz owner and businessman Larry H. Miller, died Sunday at age 45.

Larry H. Miller died in 2009. A businessman and philanthropist in Utah, he also had an impact on motorsports as he conceived the Miller Motorsports Park permanent road course outside Salt Lake City in Tooele, one of the country’s top road racing facilities. The full track was opened in 2006.